26 
Case 33. 
Case 34. 
Case 35. 
This contains Worm-tubes and the wonderful gill 
impressions of Trachyderma, Sea-mats, as 
Fenestella and Pinnatopora, and numerous 
Lamp-shells or Brachiopods ; all of Silurian age. 
Amongst the Brachiopods we may note Lingula 
lewisii , var. flemingtonensis , in which the original 
phosphate of lime in the shell is still preserved after 
the lapse of many millions of years ; also Chonetes, 
remarkable for having hollow hinge-spines. 
Amongst the Brachiopods in this series may be noted 
Orthis, a common fossil in the Silurian mudstones 
round Melbourne ; Camarotoechia, found in the 
sandstone under the Museum foundations ; Atrypa 
fimbriata, a handsome shell with a fringe of long 
spines around the edges ; and Spirifer, named 
from the complex spiral brachidia or breathing 
apparatus. 
Fig. 29. A Spinose Lamp-shell — 
Atrypa fimbriata Chapm. 
From the Silurian of Lilydale, Victoria. 
Note the large ribbed, cockle-like shells of Panenka, 
from the newest Silurian or lowest Devonian beds 
of Gippsland (Mount Matlock, &c.). These shells 
measure nearly four inches across. The genus 
Palaeoneilo is also a striking shell in its graceful 
contours and delicate surface markings. More 
than one species is identical with some from North 
America. 
